Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Anti-dilutive Effect Excluded from Computation of Diluted Net Loss Per Share Attributable to Common Stockholders

The Company excluded the following potential common shares, presented based on amounts outstanding at March 31, 2019 and 2018, from the computation of diluted net loss per share attributable to common stockholders because including them would have had an anti-dilutive effect:

	As of March 31,
	2019		2018
Convertible preferred shares (as converted to common stock)		—		24,168,656
Unvested common stock from early exercise of options		119,705		230,961
Stock options to purchase common stock		3,632,821		2,684,405
Total		3,752,526		27,084,022